Safety-catch for pins.



R. V DAVHS.

SAFETY CATCH FOR PINS.

APPLICATION FILED mm. H. 1918.

1,276,183. v Patented Aug. 20, 1918.

v U I TAT S PATENT OFFICE.

To all whom it may concern:

Be it known thatI, RAYMOND V. DAVIS,

rangements and combinations of parts here inafter described in detailand claimed in a succinct manner, reference being had to theaccompanying drawing wherein- Figure 1 is a side elevation of theimproved safety catch embodied in a bar pin;

Fig. 2 is a transverse section through the pin and depicting the catchin elevation;

Fig. 3 is a fragmentary longitudinal section through the catch end ofthe pin; and

Fig. 4: is a view similar to Fig. 2 showing the keeper rotated to haveits pin seat register with pin-retaining pocket.

Referring to corresponding parts throughout the several views by likecharacters of reference, the numeral 1 designates the body of the barpin, 2 the pin part pivoted at one end. 3 of the bar, and 4: thesafetycatch constituting the subject matter of the present invention.

This catch comprises a base or pocket portion having side flanges 5extending outwardly from the upper part thereof to provide a concave,semi-cylindrical easing into which opens the pin-retaining pocket 6 thatis formed in the base. The outer end of this concave casing or guard isclosed by a transverse end wall 7 in which is secured one end of a shaft8 that rotatably supports a cylindrical keeper 9. This keeper is mountedconcentrically to its guard or casing 5 and has radially formed thereina pin-receiving groove 0r seat 10 which opens through its periphery andis adapted to be alined with the retaining pocket or recess .6 uponrotation of the keeper, the peripheral surface of the latter beingcorrugated or roughened to facilitate the turning thereof.

In practice, the pointed end of the pin is RAYMOND v. DAVIS, or DENVER,COLORADO.

SAFETY-CATCH FOR PINS.

Specification of Letters Patent. 1Patented Aug, 20, 1918, Applicationfiled January 11, 1918. 'Se1'ia1No. 211,393.

engaged in the outwardly facing seat of the keeper, the latter beingdisposed substantially as depicted in Fig. 2, and said keeper 1s thenrotated to aline its seat with the pocket 6 of the base when the pin ispressed from the seat into the pocket and held therepin out forfreemovement about its pivot 3.

To prevent the rotary keeper from turning too freely, or in anunauthorized man ner, the end of the cylinder opposed to the end wall 7is bored to form a chamber 11 111 which is disposed a coiled, tensionedspring 12 bearing at one end on the end wall 7 and at its opposite endagainst the keeper so as to frictionally retain the latter in a setposition. By varying the tension on the spring, or by the substitutionof different spring, the frictional lock may be increased -or decreasedaccordingly.

The device is simple and eflicient in operation, being a sure lock andhaving no proecting parts to engage in the wearing apparel. The catch iseconomical in construction since the base may be stamped from sheetmetal and requires only a pin or shaft connection for mounting thekeeper thereon.

What is claimed is:

l. A safety catch for pins comprising a base having a concave guard anda pin-retaining pocket opening thereinto, said concave guard providedwith a transverse end wall, a shaft secured in the end wall, acylindrical keeper journaled on the shaft concentrically to the guardand formed with a pinreceiving groove registrable with the pocket of thebase, the end of the keeper opposed to the end wall being chambered, anda friction-affording coiled spring arranged in the chamber of the keeperto serve as a friction pocket of the base and designed to receive a pinfor carrying it past the guard to and from the pocket.

3. A safety catch for pins comprising a I guard having a pin retainingpocket and an upstanding Wall at oneend, and a keeper rotatably carriedby the Wall in overlying relation to the guard and its pocket, andformed With a peripheral seat for receiving the pinto transfer it to theguard pocket, said keeper serving to keep the pin in said guard pocket.

4. A safety catch for pins comprising a guard formed with apin-retaining pocket,

" and a combined keeper and transfer member formed With a pin-receivingcut-out for receiving the pin to deliver it to and taking it from thepin retaining pocket of the guard when communicating therewith, saidmemberbeing movableto and from a position connnunicating with thepocketwhereby to serve as a keeper for the pin WllGIl'lIl said guardpocket.

5. 111 a safety catch for pins, a rotary keeper havinganaxlalpln-transfer groove, and a concentric casing formed with a pocketnormally closed by the keeper and adapted to register With the groove onrotation of the keeper to receive the pin from the keeper groove forretention thereinby the keeper subsequent to a movement of the latterfor disalining the groove and pocket.

6. A safety catch for pins comprising a guard having 'a pin-retainingpocket in its upper face andan upstanding endwall, a cylindrical keeperjournaled horizontallyin the end Wall and overlying the/guard and itspocket, said keeper formed with a oove to receive a pin andregistrabIew-ith t e underlying guard pocket for delivering and takingthe pin to and from the pocket,- and means for holding thekeeper againstrotation.

In testimony whereof I afiix my signature.

' RAYMOND: v." DAVIS.

Copies of this patent may be obtained for flve cents each byaddressing'thc Commisflenenoi Patents,

1 Washington, D. 0.

